US1373114A

US1373114A - Chusetts

Info

Publication number: US1373114A
Authority: US
Publication date: 1921-03-29
Anticipated expiration: 1938-03-29

Description

C. C; BLAKE AND M. E. FERNALD.

WORK SUPPORT.

APPLICATION FILED MAIL II, 1916- Patented Mar. 29, 1921.

4 SHEETS-SHEET 1 c. 0,. BLAKE AND M. E .'FERNAL D.-.

WOBK SUPPORT. APPLICATION FILED Mn 17. me.

Patented Mar. 29, 1921.'

4- SHEETSSHEET 2.

C. C. BLAKE AND M.. E. FERNALD.

WORK SUPPORT.

APPLICATION FILED MAR- 17. 1916.

1,373,] 1 4-, Patented Mar. 29, 1921.

4' SHEETS-SHEET 3.

NORRIS FEYERS. lNC.. LITHQ, WASHINGTON. D- c C. G. BLAKE ANDYM. E. FERNALD.

' WORK SUPPORT.

APPLICATION FILED MARAJ. 1916.

l,373,1 1 4;. Patented Mar. 29, 1921.

4 SHEETS-SHEET 4.

UNI ED- STATES I PATENT OFFICE.

CHARLES C. BLAKE, OF BROOKLINE, MARK E. FERNALD,'0F SAUGUS, MASSA- I CHUSETTS.

WORK-SUPPORT.

Specification of Letters Patent. Patented R131. 29, 1921,

Original application filed April 14, 1915, Serial No. 21,424. Divided and this application filed March 17,

. l 1916 Serial No. 84,802.

chines, and more particularly to work supports therefor.

The objects of the present inventlon. are

to simplif and improve the construction and mode of operation of work supports for general use in. shoe machines and to.

provide an efficient work. support for the machine disclosed in the application for Letters Patent of the United States filed April 14, 1915, Serial No. 21,424, of which this application is a division. 7 i

To the accomplishment of these objects, and such others as may hereinafterappear,

the features of the invention consist in certain devices, arrangements, and combinations of parts fully set forth hereinafter, the advantages of which will be readily understood by those skilled in theart.

The mriousfeatures of the invention will be readily understood from an inspection of the accompanying drawings illustrating the best form of the invention at present devis in which,

1. ure 1 is a detail in side elevation of a machine embodying the present invention;

Flo. 2' is a vertical sectional elevation;

-1g. 3 a plan; and

dis a sectional plan on the line 4c.4i,

Fig. 2. the grippers being removed to show the slots which contain the gripper supports.

The embodiment of the invent on illustrated in the drawings is provided with a.

' pattern for producing an upper to fit a particular last the drafter places two lines on the upper surface of the forepart of the last, one of which is called the lead line and the other of which is called the tip-seam line. The lead line lies in a vertical plane bisectin the arch of the last. Thetipseam line lies in a vertical plane perpendicular to the plane of the lead line and is located substantially one-fifth of the length of the last from the tip of the toe. WVith the lead line as a guide it is a comparatively easy matter to draft a pattern for producing an upper which, when assembled on the last, will have the lacing slit thereon arranged in a vertical plane passed longitudinally through the lead line. It is moredifficult when using the tip seam line on the last as a guide to predetermine the position of the tip-seam on the upper for the reason that the drafter must calculate the amount of longitudinal stretch of the upper so that the tip-seam of the upper will coincide with the tip se'am on the last only after the upper has been stretched on the last; Consequently the tip-seam line on the assembled upper must be located back ofthe tip-seam line on the last a distance equal to the amount of longitudinal stretch of the up- I per. After the upper is prepared in the manner described a notch is cut in the tip of the toe which is alined with the lacing slit and the lead line. If the upper is as sembled on the last so that the lacing slit and notch lie in a vertical plane passed longitudinally through the lead line it will be apparent thatthe upper is positioned for lasting operation in the manner predetermined by the pattern draftcr. If the upper is lasted after being assembled in this position the tip-scam line of the upper will be stretched forward to coincide with the tip-seam line on the last. Similarly all the other parts of the upper will be drawn to the wood of the last in a natural position. An attempt to place the'upper in any position otherthan the proper assembled one will only result in straining the upper into an unnatural position on the last resulting in a botch the strained lines of which will the shoe.

In our machine we propose to take ad vantage of the knowledge and skill of the pattern drafter. To this end we center the last in the machine so that the lead line on the last registers with the center line of the machine and we also engage the portion of upper surrounding the notch with a gripper 3 (Fig; 2) which is constrained to move into upper-engaging position in a vertical plane intersecting the notch, the lead line and the lacing slit. Two floating grippers, namely, the grippers a anl 5, are then engaged with the ends of the tip-seam which are at this time located back of the tip-seam line on the last; After these three grippers, hereln called the critical grippers, engage the upper the remaining grippers are caused to engage the upper in an orderly man-.

' i of the upper is carried forwardly so that it coincides with the tip-seam line on the last. With this construction and mode of operation the upper may be drawn to the. wood of the last in the position predetermined for it by the pattern drafter without that adjustment of the upper on the last which is a characteristic feature of the presentcommercial hand and machine methods of pullmg-over.

As shown in Fig. ithe grippers 4t and 5 and, all 01" the other grippers for lasting the sidesot the shoe operate in parallel slots 6 (Fig. l). The slots 6 which contain the grippers 4 and 5 are ar anged in the vertical plane which passes through the tip-seam line of the last. The grippers 3 and all of the other grippers for lasting thetoe of the shoe .operate in slots 7 which radiate from a common point lying in the vertical plane oi the tip-seam line of the last.

The'grippers (Fig. 2) comprise a lower jaw 8 and an upper jaw 9. The lower jaw is formed on a bar 10 which is pivoted at 11 to move between plates 12 rising from a carrier 13. The upper j aw is formed on a bar 14 which is pivoted at 15 to the bar 10. The jaws are closed to grip the upper through the manipulation of a handle 16 which is pivoted to a tail 17 on the bar 10 and is connected to the upper jaw 9 by a bar 18. The bar 18 is provided with bends 19 to permit the jaw. 9 to yield and thus accommodate itself to varying thicknesses of the upper inserted between the jaws.

The carrier 18 is pinned to a rod 20 rotatably mounted in bearings 21 formed on a support 22 one of which is contained in each of the

slots

6 and 7. The support 22 normally rests upon a buitenspring 23 car ried in a spring-cage 2d on the top of the machine frame. The support is provided with a foot 25 having a groove 26 formed thereon which hooks under a rail 2? carried by a base 28 bolted to the top of the machine frame.

The rail 27 is curved around the toe and is straight along the sides and incloses an area substantially equal to the projected area of the insole on the last.

In order to const "am the critical gripper 3 to move longitudinally into its gripping position in a vertical plane intersecting the notch, the lead line and the lacing slit, the support 22 therefor carries a yoke 33 (Fig. 2) arranged to hold the bar 10 from turning about the axis of the rod 20 during the up per-engaging movement of the gripper.

In the illustrated embodiment oi the invention the last 2 (Fig. 2) having assembled thereon the insole and upper and parts within it, is placed in the machine with the face oi the heel of the last engaged with a back rest and with the insole on the last engaged with a'heel seat rest 35 and a forepart rest 36. The back rest 3 1 is provided with a slot 37 for thereception of an assemand is mounted to slide upon the top of the guide at). Theforepart rest 36 is provided with an indicating mark l3 (Fig. 3) arranged 1n the center line of the machine.

The forepart rest 36 is "formed 011 a slide 4% which is mounted to slide between the plates 41 onthe top of the carrier d2. To properly position the last laterally as it is moved by the operative against the back rest 3% "the slide 39 carries a pair of arms 45 arranged to embrace the face or" the heel of the last. One of the arms is carried by a vertical post 46 which is pivotally mounted in the slide 39. The other arm is loosely mounted on the post 46. With this construction the arms may shift laterally to properly center right and left lasts and may separate more or less to accommodate lasts of difierent sizes. The arms 45 separate under the pressure of the work introduced between them against the tension of a pair of leaf springs 47 (Figs. 1, and 4) carried by the slide 39.

In order that the lasting devices of the machine may operate upon all sizes and styles of lasts whether rights or lefts with out substitution, change or adjustment 1 block 63 is actuated to press the rod 61 into thereof the forepart and heel part rests are I mounted for adjustment toward and from each other in a differential manner so that the tip-seam line on the last hereinbefore referred to may be uniformly positioned in the vertical plane of the slots 6 of the grippers 4 and 5 irrespective of the size or style of last upon which the upper is positioned. To position singly a plurality of difierent sizes or styles with the tip-seam line thereon in an invariable position relative to the lasting devices the guide carries a horizontal shaft 48 which is provided at one end with coarse threads 49 and at the other end with fine threads 50. The coarse and fine threads engage respectively with similar threads in the slides 39 and 44. The'shaft 48 carries a gear 51 which is driven from a horizontal shaft 52 (Fig. 4) through a gear 53 carried by the shaft 52. The shaft 52 is connected by a universal joint 54 to a shaft 55 which 7 is journaled in a bearing 56 carried by a universal joint 57 (Fig. 4) supported b a bracket 58 on the machine frame. he

" shaft 55 carries a hand wheel 59 by means tip-end of the rest 36,. the mark on the rest 36 registers with the lead line of the last and the tip-seam line on the last lies in the vertical plane of the slots 6.

In order to clamp the positioned last to prevent its displacement during the lasting operation the'usual spindle socket 60 is engaged by a bent rod 61 (Figs. 1 and 2) which binds the. last upon its supporting rests. To this end the free end of the rod 61 is engaged by the sloping faces of a block 63 which is securedto a yoke 64 pivoted on a pin 65 (F ig. 1) carried by the slide 39. The

binding engagement with the last 2 by a three-armed lever 66 which is mountedjin a slot 67 (Fig. 1) formed in the slide 39 and pivoted to a. pin 68 carried'by the slide. The lever 66 is provided with a handle 69 for engagement by the operative;- In order 7 that the clamp may adapt itself to the varying heights of lasts the lever 66 is yieldingly connected to the yoke 64. To this end a rod 7 0, pivoted at 71 to the yoke 64, is loosely embraced by a block 72 (Fig. 2) pivoted to the lever 66. .Interposed'between the block 72 and a shoulder 73 on the rod is a spring 74'coiled around the rod. With this construction manipulation of the handle 69 in one direction tensions the spring 74 which yieldi-ngly presses therod 61 into binding engagement with the last. I It will be noticed the pivots 71 and 72 provides a yielding arm.

for the toggle.

After thelast witlr the upper thereon has been properly positioned andclamped in they machine the grippers are engaged with the upper around the forepart and then the last and grippers are relatively actuated to stretch the upper on the last. To relatively actuate the last and grippers the carrier 42 is connectedto 'a vertical rod 75 (Fig. 2) which is provided at its lower end with a rack 76 engaged by a pinion 77 which is driven from a suitable source of power to elevate the last.

It is desirable to automatically unclamp the last during the elevation thereof in order to prepare for the ready removal of the lasted shoe from the machine. Tothis end the lever 66 .(Figs. 1 and 2) is pivoted at 102 to an arm 103 which in turn is pivoted to a block 104 mounted to slidein ways 105 carried by the bracket 79. Interposed in the path .of movement of the block 104 is a slide 106 which interrupts the movement of the block-104' responsive to the elevating movement 'of the last thus causing the lever- 66 to turn about its pivot 102 and thereby reak the toggle to free the rod 61. The return of the toggle to its broken position is.

retarded by friction bloc rs 107 (Fig. 1) arranged on opposite sides of the guide 39 in position to engage friction surfaces 108 (Fig. 2) on the lever 66. The slide 106 is adjustably mounted to move into and out of the path of the block 104 so that the auto matic unclamping of the last may or may not take place at the will of the operative.

It will be apparent to those skilled in the art that changes may be made in the details of structure, the described and illustrated embodiment thereof being intended as an exploitation of its underlying essentials, the features whereof will be definitely stated in their true scope in the claims hereto appended.

What 1s claimed as new, 18 1. in a lasting machlne the combination of means for supporting a shoe with the tipend of the shoe. a heel seat rest arranged to r engage the heel seat of the insole, and a forepart rest arranged to engage the tip end of the insole, and means for centering the shoein the machine comprising a pair of arms arrangedto embrace the counter of the shoe and an indicating mark on the torepart rest arranged in the center line of the ma chine which registers with the lead line on the last, substantially as described.

A lasting machine, having, in combination, means for supporting a shoe with the tip-seam of the upper in full view of the .op'erativeand adjusting means for said support enabling it to support anyone of a plurality of lasts of dilierent sizes with the tip lines thereon in invariable position, sub= stantial-ly as described.

4:. A lasting machine, having, in combination. a support for an assembled shoe comprising a'pair of bot-tom rests arranged to engage respectively the heel seat and tipend of the insole, and means for differentiallyadjusting the rests comprising a rod provided with fine and coarse threads which engage similar threads on the tip-end and heelseat' rests respectively, substantially as described.

5. A shoe machine, having, in combina-- tion, a shoe support comprising a pair oi":

bottom rests arranged to engage respectively the heel seat and tipend of the insole. means for difierentially adjusting the rests comprising a rod provided with fine and coarse threads which engage similar threads on the :means for automaticallybreaking the toggle, substantlally as described.

'8. A shoe machine, having, in combination, a work support, a clamp for binding the work, including a toggle, a manually operated device for making the toggle, means for automatically breaking the tog gle. and a friction device for retarding the i return of the toggle to broken position, substantially as described. I 9. A shoe machine, having. in combination, a shoe support, and a clamp r'or'binding the shoe on the support comprising a. rod arranged to engage the spindle hole in the last, a block-arranged to engage the rod, and a toggle for locking the block in its tion, the central pivot of which is carried 7 by the yoke and the other pivots of which are carried by a pivoted lever provided with an actuating handle, substantially as described. 7

11. A shoe machine, having, in combination, a shoe support, a clamp for binding the shoe on the support comprising a rod arranged to engage the spindle hole in the last, a block arranged to engage the rod, a toggle for locking the block in its rod-engaging position, and automatic means for breaking the toggle to release the rod during the elevation of the support, substantiallyas described.

12. A shoe machine, having, in combination, a shoe support, a clamp for binding the shoe on the support comprising a rod illli nged to engage the spindle hole in the last, a block arranged to engage the rod, a toggle for locking the block in its rod-engaging position, and a lever provided with an operatinghandle for manually making and breaking the toggle,.substantially as described.

13. A shoe machine, having, in combination. a vertically movable shoesupport, a

clamp for binding the shoe on the support comprising a rod arranged to engage the spindle hole on the last, a block arranged toengage the rod, a togglefor locking the block in its rod-engaging position, a lever provided with an operating handle for manually making and breaking the toggle, and means for automatically breaking the toggle to release the rod during the elevation of the support, substantially as described.

' 14. A shoe machine, having, in combination, a vertically movable shoe support, a clamp for binding the shoe'on the support comprising a rod arranged to engage the spindle hole in the last, a block arranged to engage the rod, a toggle for locking the block in its rod-engaging position, a lever provided with anoperating handle for manually making and breaking the toggle, and means for automatically breaking the toggle to releasethe rod during the elevation of the support comprising a slide, mounted to move with the support, connected to the operating lever and a device for interrupting the movement of the slide, substantially as described. 7 15. A shoe machine, having, in combination, a shoe support and a clamp for binding the shoe on the support comprising a rod arranged to engage the spindle hole in the arranged to engage the spindle hole in the last and a block having sloping faces of 10 last, and a block having sloping faces argreater length than the diameter of the rod ranged to engage the rod, substantially as arranged to engage the rod, substantially as described. described.

16. A shoe machine, having, in combination, a shoe support and a clamp for binding CHARLES C. BLAKE. the shoe on the support comprising a rod MARK E. FERNALD.